Magnetic and dielectric study of R0.5Sr0.5MnO 3 (R = Gd, Tb and Dy)

Kenji Yoshii, Yusuke Hiramitsu, Yuka Okajima, Yasuhiro Yoneda, Yasuo Nishihata, Jun'Ichiro Mizuki, Akio Nakamura, Yutaka Shimojo, Yoshinobu Ishii, Yukio Morii, Naoshi Ikeda

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Abstract

Magnetic and dielectric properties of perovskite manganites R 0.5Sr0.5MnO3 (R = Gd, Tb and Dy) have been investigated. DC and AC magnetic measurements showed short-range glassy magnetic ordering at Tg ∼ 40 K. Such ordering was observed by neutron diffraction and is ascribable to the size mismatch of R3+ and Sr 3+ settled randomly at the same crystallographic site. Dielectric constants for each material were ∼1000-10,000 between ∼50 and ∼300 K and showed broad maximums above Tg. Dielectric dispersion showed poor coherency of the motion of polar regions, plausibly because of the size-mismatch effect; both the magnetic and dielectric properties of this sysstem are governed by the randomness at the R/Sr site. The tan δ and EXAFS data suggest that the dielectric response is rooted in a transfer of the Mn-3d electrons.

Original languageEnglish
Pages (from-to)1574-1580
Number of pages7
JournalMaterials Research Bulletin
Volume45
Issue number11
DOIs
Publication statusPublished - Nov 2010

Fingerprint

Dielectric properties
dielectric properties
Magnetic properties
Permittivity
magnetic properties
Manganites
Magnetic variables measurement
Neutron diffraction
Perovskite
polar regions
magnetic measurement
neutron diffraction
Magnetization
alternating current
direct current
permittivity
Electrons
electrons
perovskite

Keywords

  • A. Oxides
  • C. Neutron scattering
  • D. Dielectric properties
  • D. Magnetic properties
  • E. EXAFS

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Yoshii, K., Hiramitsu, Y., Okajima, Y., Yoneda, Y., Nishihata, Y., Mizuki, JI., ... Ikeda, N. (2010). Magnetic and dielectric study of R0.5Sr0.5MnO 3 (R = Gd, Tb and Dy). Materials Research Bulletin, 45(11), 1574-1580. https://doi.org/10.1016/j.materresbull.2010.07.024

Magnetic and dielectric study of R0.5Sr0.5MnO 3 (R = Gd, Tb and Dy). / Yoshii, Kenji; Hiramitsu, Yusuke; Okajima, Yuka; Yoneda, Yasuhiro; Nishihata, Yasuo; Mizuki, Jun'Ichiro; Nakamura, Akio; Shimojo, Yutaka; Ishii, Yoshinobu; Morii, Yukio; Ikeda, Naoshi.

In: Materials Research Bulletin, Vol. 45, No. 11, 11.2010, p. 1574-1580.

Research output: Contribution to journalArticle

Yoshii, K, Hiramitsu, Y, Okajima, Y, Yoneda, Y, Nishihata, Y, Mizuki, JI, Nakamura, A, Shimojo, Y, Ishii, Y, Morii, Y & Ikeda, N 2010, 'Magnetic and dielectric study of R0.5Sr0.5MnO 3 (R = Gd, Tb and Dy)', Materials Research Bulletin, vol. 45, no. 11, pp. 1574-1580. https://doi.org/10.1016/j.materresbull.2010.07.024
Yoshii K, Hiramitsu Y, Okajima Y, Yoneda Y, Nishihata Y, Mizuki JI et al. Magnetic and dielectric study of R0.5Sr0.5MnO 3 (R = Gd, Tb and Dy). Materials Research Bulletin. 2010 Nov;45(11):1574-1580. https://doi.org/10.1016/j.materresbull.2010.07.024
Yoshii, Kenji ; Hiramitsu, Yusuke ; Okajima, Yuka ; Yoneda, Yasuhiro ; Nishihata, Yasuo ; Mizuki, Jun'Ichiro ; Nakamura, Akio ; Shimojo, Yutaka ; Ishii, Yoshinobu ; Morii, Yukio ; Ikeda, Naoshi. / Magnetic and dielectric study of R0.5Sr0.5MnO 3 (R = Gd, Tb and Dy). In: Materials Research Bulletin. 2010 ; Vol. 45, No. 11. pp. 1574-1580.
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AU - Mizuki, Jun'Ichiro

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